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Mazda B4000 4WD Switch

Q.
Hi Vince, I'm asking about my 1994 Mazda B4000 SE V-6 4WD. The truck will not switch over to 4 wheel drive any more. The light on the dash and the light on panel by the button you push will not light up at all. I have checked all fuses and that seems to be okay. I'm hoping for a simple answer.

Ha! Yeah right. Is there any info you can give me on what's wrong?

Tim in ND

A. There are two fuses under the hood that supply power to the transfer case electrical system They are fuse 7 and fuse 16, both 20 amp fuses.

If they are good, remove the 4WD Switch and check for power going in. If there is no power going in, there is a problem in the wiring. If there is power, then check the black ground wires for continuity. If the wiring checks out, then you probably need a 4WD Switch.